Glossary
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D
- desmid - green algae that have conjugation of non-flagellate, amoeboid gametes
- diatom - member of Bacillariophyceae
- diatomaceous earth - siliceous geological deposits made up of diatom frustules
- diffuse growth - generalized growth, not localized at apex or base
- dioecious - (two houses) producing male and female gametes on different individuals or clones
- diploid - having twice the basic haploid number of chromosomes
- diplontic
- diurnal - having daily periodic cycle, e.g. endogenous circadian rhythm
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